giehler



Nov. 23 1926.

G. F. GIEHLER LOOM 2 Sheets-Sheetl 1 Filed June 6, 1925 3fm/5.56.5.- zml /yew/b MM MMM,

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, Patented Nev. 23, i926.

UNITEDSTA'rss Param ortica.'

GUSTV FREDBC- GIEHLER, OF C'IEIENETZ, GERMANY.

LOOM.

'Application inea June s, 1925, serial No.

lThis Viiwention relates toa loom ot the type shown in British Patent No. 151,270 wherein the implements used 'for the weaving, such as shuttles,l skewers andthe like, on their run through the shed, are guided by members which are 'supported `on the lathe or hatten and enter the shed for the time of the `run of the shuttle or, the like.

ln order to render possible the .entrance of these guiding members into the shed and to guard, as tar as possible against an injurious influencing of the warp threads by the said members, projections in the form of right-angled triangles have hitherto been fitted to the lathe, these proieetionsr penes tratingbetween'the threads oic the upper and lower shedsV before the attainment ot their maximum distance from one another, and these projections have been so distributed that on one side et each triangle a space is lett, free from threads, through which the guiding members enter the rlhese contrivances were rathercomplicated, and, owing` to the said triangular projections on the lathe acting on the warp threads there was a non-uniform and not altogether harmless stressingr of the warp threads.

' According to the present invention the contrivance is so arranged that the lathe projections for producing the passage 'spaces :tree from warp threads tor the entrance of the shuttle and like guiding members are nolong'er necessary The Lguiding` members `are so constructed and so moved that they can enter between the warp threads oit the upper and lowrsheds running in theV usual manner and areso moved laterally, that is in the direction of the shuttle race, `that duringr the shed-forming movement ot the warp threads they do not act unfavourably on the latter, as they move out of the way of the warp threads moving up or down in torming sheds. The members that form the guiding tracks of the shuttle or the like are then in them selves of a simpler kind, and the same remark applies to the members that move and guide them.

The guiding members themselves are in the form of straight pegs or pins, which rest in guides so as to be displaceable in their longitudinal direction by plates arranged on the lathe, which in their turn are so mounted on the lathe as to be reciprocable in the longitudinal direction thereof.

One constructional example of the subsheds. f

35,392, and. in Germany August 28, 1824.

ject-matter of the invention is illustrated in the accompanying drawing, wherein,

Figure 1 shows a partial front elevati-on,

Figure 2 a correspondingr plan, and Y Figure 3 a cross-sectional View illustrating three characteristic lathe positions.

To the lathe is secured an angle iron 1, which will hereinafter be designated the lathe. On the vertical lathe 1 are supported individual plates 3. They each engage with slots 4 over two screws 5 mounted on the lathe, so that with their slots they can slide backwards and forwards thereon. The am plitude of the reciprocating motion enr ployed in the present case is given by the dimensions indicated. at a in Figure 1. The individual plates 3 are connected with one another by coupling members 7. A rod 8, which is connected with any movable part ot the, loom, moves the coupled plates 3 backwards and forwards by the amount a. On each plate is arranged a slot guide 10, in which rests a corresponding profile Abar 11, which merges at its upper end, according` to Figure 1, into the peg-like guide 12 for shuttles or the like. The slot guide, and with it the peg 12, are at an angle ot about 45 to the horizontal` and .each peg 12 is iiattened oit at the top so as to 'form an edge at 13, which facilitates Vpenetration between the warp threads ot the lower shed. The contrivance is only illustrated for the lower shetgvbut obviously it is also provided in the same manner for the upper shed, but turned ot' course in the reverse direction.

OnV the guiding' member 11 of each `guiding peg 12 there engages, on a pivot 15, a short connecting' rod 16, which is mounted on the pivot pin 17 of a crank 19, `ioni'- nalled at 1S on the plate 3. The crank pins 17 ot all the plates 3 are coupled to one another by a common rod 20. The rod 2O is moved by any suitable means in a similar manner to the rod 8.

It the rod 2O moves to the right, in the sense of Figure 1, all the cranks 19 swing` in a clockwise direction, and their connecting rods 16 move the guiding pegs 11, 12 out ot the chain-dotted positions Z) into the -tullline highest positions c and guide them, during the reversed swinging of the cranks 19, back into the positions Owing to the movement oit the rod 8, the ground plates 3, which carry the guiding pegs 11, 12, and which may also be united to the number of tl i) several, are reciprocated by the amount a,

so that the guiding pegs ltravel baclrwards and forwards between the positions c and c, in so far as they remain during the movement of the plate 3 in the highest position as illustrated.

Now during the shed-formation the lathe l moves backwards and forwards, B in Figure 3 showing a mid position while A and C show the terminal positions. During the lathe movement from A to C the warp threads 7.21 and 7a2 of course stand still, as they always allow the swinging movement required for the shed-forming to finish. if in the lathe position A the blade or reed p has beaten up, the guides l2, when the lathe swings to the left, must pass between -the warp threads, in order to serve, in about the position C, in the case of the maximum shed opening, asa guide for the shuttle.

The warp threads ot' the two sheds move upwards and downwards during the swinging of the lathe, and in order that vthey may not be hindered during this motion by the oblique pegs l2, and may not rub against them, the reciprocating movement of the plates 3 carrying the pegs l2, as well as the reciprocating movement of the pegs l2, is effected by the means set forth above. it, when the shed opens the warp threads le? are moving oownwards, the threads indicated at 7c3 on the right of Figure l would come into contact with the guiding` peg l2 introduced there into the Yshed and they would slide downwards along its left-hand oblique surface, 'that is, they would be de.- flected towards the left out of vtheir vertical path of motion. This is prevented by means of the contrivances set forth, owing to the fact that at the same time the carrying-plate 8 of the peg l2 moves` away to the right,fso that thel left-hand oblique lateral surfaces of the peg l2 always move out of the way t0- wards the right just so far that the descending threads at 7c3 can move without'hindrance. In that case the oblique peg l2 slides with its right-hand side to a certain extent over the warp threads 7a4 located there without being able to affect them adversely. lf the warp threads previously located in the position 7c3 have then, in the course of the shed opening, reached Athe similarly drawn position lf, the guiding` peg l2 has then passed into the chain-dotted position; upon the change of direction of the warp movement the change of direction in the movement of the plate 3 also occurs, so that the warp thread adjacent to the guiding peg l2 for the time being in turn remains immediately adjacent to the oblique side of the guiding peg, wit-hout disturbing triction or the like being able to occur.

For the guiding device set forth it it not a condition that the guides l2 should consist of straight bodies.. They might be curved instead. The reciprocating movement of their carriers 3 would then have to be so timed that the guides, during the shedformation and during their movement within the warp threads,V do not disturb the latter in their movement. The construction of the moving mechanisms however is of course simpler in the case of a straight formation of the guides.

1What l claim is:

l. A loom conlprisingv weaving implements adapted to pass through a shed formed by shifting some of the warp threads in one direction and some in another, guiding bodies for said implements, laterally reciprocable carrier plates, said guiding bodies being mounted on said carrier plates,-

and the movements of said carrier plates being so timed that said guiding bodies move out of the way of the warp threads as said warp threads are shifted to form sheds.

2. A loom comprising weaving implements adapted to pass through a shed formed by shifting some of the warp threads in one direction and some in another, rect-ilinear peg-like. guiding bodies for said implements, and laterally reciprocable carrier plates formed with oblique slot guides adapted to support said guiding bodies.

3. A loom comprising weaving implements adapted to pass through a Shed formed by shifting some of the warp threads in one direction and some in another, guiding bodies for said implements, laterally reciprocable. carrier plates, said guiding bodies being mounted on said carrier plates, the movement of said carrier plates being so timed that said guiding bodies move out of the way of the warp threads as said warp vthreads are shifted to form sheds. and crank mechanisms coupled to one another for reciprocating the guiding bodies relatively to the carrier plates on which they are mounted.

4. A loom comprising weaving implements adapted to pass through a shed .formed by shifting some of the warp threads in one direction and some in another, a swinging lathe, peg-like guiding bodies capable of moving in a straight line for the weaving implements, laterally reciprocable carrier plates formed with oblique slot guides adapted to support said guiding bodies, means for so timing the movements of said carrier plates that said guiding bodies move out of the way of the warp threads during the oscillations of the. lathe as said warp threads are shifted to form sheds, and crank mechanisms coupled to one another for reciprocating the guiding bodies relatively to the carrier plates on which they are mounted.

In testimony whereof I Vhave signed mv name to this specification.

GUSTAV FRIEDRICH GIEHLER.

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